 /*******************************************************************************
  * Copyright (c) 2005, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal.dialogs;

 import org.eclipse.jface.resource.ImageDescriptor;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.wizard.Wizard;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.internal.IWorkbenchGraphicConstants;
 import org.eclipse.ui.internal.WorkbenchImages;
 import org.eclipse.ui.internal.WorkbenchMessages;

 /**
  * The import/export wizard allows users to choose whether to
  * show the import wizard or the export wizard.
  *
  * @since 3.2
  *
  */
 public class ImportExportWizard extends Wizard {
     /**
      * Constant used to to specify to the import/export wizard
      * which page should initially be shown.
      */
     public static final String IMPORT = "import"; //$NON-NLS-1$
 /**
      * Constant used to to specify to the import/export wizard
      * which page should initially be shown.
      */
     public static final String EXPORT = "export"; //$NON-NLS-1$

     private IWorkbench workbench;
     private IStructuredSelection selection;
     private ImportExportPage importExportPage;
     private String page = null;
     
     /**
      * Create an import/export wizard and show the page
      * with the given id.
      *
      * @param pageId
      */
     public ImportExportWizard(String pageId){
         page = pageId;
     }
     
     /**
      * Subclasses must implement this <code>IWizard</code> method
      * to perform any special finish processing for their wizard.
      */
     public boolean performFinish() {
         importExportPage.saveWidgetValues();
         return true;
     }

     /**
      * Creates the wizard's pages lazily.
      */
     public void addPages() {
         if (page.equals(IMPORT)) {
             importExportPage = new ImportPage(this.workbench, this.selection);
         } else if (page.equals(EXPORT)) {
             importExportPage = new ExportPage(this.workbench, this.selection);
         }
         if (importExportPage != null) {
             addPage(importExportPage);
         }
     }

     /**
      * Initializes the wizard.
      *
      * @param aWorkbench the workbench
      * @param currentSelection the current selectio
      */
     public void init(IWorkbench aWorkbench,
             IStructuredSelection currentSelection) {
         this.workbench = aWorkbench;
         this.selection = currentSelection;

         ImageDescriptor wizardBannerImage = null;
         if (IMPORT.equals(page)){
             wizardBannerImage = WorkbenchImages
                 .getImageDescriptor(IWorkbenchGraphicConstants.IMG_WIZBAN_IMPORT_WIZ);
             setWindowTitle(WorkbenchMessages.ImportWizard_title);
         }
         else if (EXPORT.equals(page)){
             wizardBannerImage = WorkbenchImages
                     .getImageDescriptor(IWorkbenchGraphicConstants.IMG_WIZBAN_EXPORT_WIZ);
             setWindowTitle(WorkbenchMessages.ExportWizard_title);
         }
         if (wizardBannerImage != null) {
             setDefaultPageImageDescriptor(wizardBannerImage);
         }
         setNeedsProgressMonitor(true);
     }
 }

